Automotive Air Conditioning Information Forum (Archives)

eins on Mon September 17, 2012 11:28 PM

Year: 2002
Make: bmw
Model: 530d
Engine Size: 3000
Refrigerant Type: r134a
Country of Origin: Nicaragua

Hello Ac enthusiasts,

I bought a brand new compressor for my bmw 530d however there is a hole on it that I don´t know what this hole is for. Take a look please Here is another angle



What is this hole for?

I would appreciate your help please. Thanks

I

TRB on Mon September 17, 2012 11:46 PM

Pressure switch port I believe.

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eins on Tue September 18, 2012 12:01 AM

Thanks trb, What is supposed to connect to that hole if anything?, or can I just use the compressor with the hole open like that?

GM Tech on Tue September 18, 2012 8:19 AM

You typically transfer the switch (or high pressure relief valve) from the old unit to the new unit--do you have the old unit? Replacement compressor manufacturers save money by not supplying parts you should already have...

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eins on Tue September 18, 2012 9:06 AM

Thanks GM Tech, I have the old compressor which has the old relief valve.
Where can I get another relief valve? Just in case I transfer the old relief valve to the new compressor and the old relief valve is faulty.